Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Intense rainfall"”.
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A Climatology of the Structure, Frequency, and Propagation of Midlatitude Cyclones that Affect North Carolina
… effect on their structure, intensity, rainfall amounts and tracks. For all seasons, the most frequent midlatitude cyclone type was the Rockies type. This midlatitude cyclone type brought the most consistent rainfall to NC. The most intense precipitation occurred during Gulf type …
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The Varying Effects of Climate And Landscape Changes on Increased River Flows In Minnesota Watersheds
… understood. There is also some indication that intense rain events have increased across this region and may coincide with increased flood events. However, most climate studies have not considered the roles of watershed antecedent moisture conditions and runoff storage in their proxies of …
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Precipitações diárias intensas na cidade de João Pessoa, Paraíba.
… as main objectives to measure and analyze the intense daily rainfalls and their impacts on urban area in the city of João Pessoa, from 1981-2012. The methodological procedures to reach the proposed objectives were: bibliographical research on the subject, followed by the collection and analysis …
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Risk prevention and policy formulation : responding to the 1999 mud-floods catastrophe in El Litoral Central, Venezuela
Fifteen days of constant and intense rainfall in Venezuela culminated on December 16 1999, in catastrophic landslides and flooding along 25 miles of the Vargas State coastal strip. This catastrophe ravaged the Caracas seaside, ripping up houses and infrastructure and literally reshaping the …
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Runoff, infiltration and soil erodibility studies in the Otutira catchment
… major causes of runoff from pastures are very intense rainfall on a soil with low moisture content. (2) Infiltration studies with an infiltrometer, designed and built for the purpose, reinforce the conclusions drawn from runoff studies. They also show that modifications of soil properties, …
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Thermally generated convection and precipitation over volcanoes: Numerical modelling of flow over Montserrat
… with a heated summit, i.e. an active volcano. Intense rainfall over active volcanoes is known to trigger dangerous volcanic hazards, from remobilising loose surface material into lahars or mudflows, to initiating explosive activity such as pyroclastic flows. The effect of a heated volcanic …
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Water quality and hydrological assessment and modeling of bioretention basins in tropical cities
… solids are generally met only for low-depth rainfall events and not high-depth events. We attribute this to the low influent event mean concentration and weak first flush resulting from the frequent and intense rainfall of the tropical climate. Second, field observations on hydrological …
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Environmental Influences on Tree-driven Karst Bedrock Physical Weathering
… identify how roots responded to wind gusts and rainfall events. Roots of both species exerted higher daily forces between the hours of 10:30 and 23:00, reaching daily maximum forces between 15:00 and 18:00, and exerting forces for approximately an extra hour during the fall and spring compared …
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Hydrogeology of the Hillsboro landfill, Hillsboro, North Dakota
… and, even then, only during periods of intense rainfall. </p><p> Based upon calculated average linear velocity of groundwater beneath the landfill, groundwater travel time from the northern portion of the buried refuse to the southern limits of the landfill site is nearly 28 years. Given …
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Landsliding and sediment dynamics following the 2008 Wenchuan Earthquake in the Beichuan area of China
… a post-earthquake mountainous environment. The intense seismic shaking of an earthquake leaves the ground destabilised and thus very susceptible to slope failure. In addition to co-seismic landsliding, many slopes retain the high potential to fail for a significant amount of time beyond seismic …
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Rainfall patterns in a small-scale watershed based on NexRad and ground-based datasets
… require a realistic representation of probable rainfall in its most sensible spatial-temporal dimensions matching that of the phenomenon under investigation. As one of the most critical inputs in environmental models, rainfall data can significantly change the quality and reliability of the …
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Groundwater hydrogen, oxygen, and strontium isotope variation of Hout Bay Valley, Cape Town
… and November 2020 groundwater. The first is that intense rainfall events preferentially recharge groundwater with low δD and δ18O values. The second explanation is that Hout Bay groundwater might have retained more negative δD and δ18O values from rainwater recharge prior to March 2020. Lastly, …
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Deep Learning Architectures for Improving Weather Research and Forecasting (WRF) Precipitation Estimates and Landslide Susceptibility Mapping: A Case Study of Puerto Rico
… hazards, particularly those associated with rainfall-induced landslides. For the latter, obtaining precise precipitation estimates is essential, as intense rainfall events can trigger landslides that pose significant risks to human life, infrastructure, and ecosystems, particularly in …
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Living with a changing climate: Holocene climate variability and socio-evolutionary trajectories, central Turkey
… and early Iron Age times, but frequent and intense centennial-scale climatic shifts between wet and dry are also evidenced during the last 2600 years from Ca/Sr data. Peaks in Fe and Ti, along with Si, K and Rb indicate two distinct phases of increased sediment influx into Nar Lake, namely …
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Effects of anthropogenic and natural disturbance on sedimentary organic matter quantity, nutritional quality and degradation in river, lagoon, and coastal marine ecosystems
… MHWs. Moreover, I investigated the effects of intense rainfall and freshwater flash-flood events, among the major threats for coastal ecosystems worldwide, which are becoming increasingly frequent and catastrophic due to current CC especially in the Mediterranean Basin. I conducted two …
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NON-PARAMETRIC STATISTICAL APPROACH TO CORRECT SATELLITE RAINFALL DATA IN NEAR-REAL-TIME FOR RAIN BASED FLOOD NOWCASTING
Floods resulting from intense rainfall are one of the most disastrous hazards in many regions of the world since they contribute greatly to personal injury and to property damage mainly as a result of their ability to strike with little warning. The possibility to give an alert about a flooding …
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Assessing natural risks for railway infrastructure and transportation in Austria
… in Austria, it appears that an increase in intense rainfall events and heat waves has to be expected, whereas heavy snowfall and cold days are likely to decrease. Furthermore, results indicate that frequencies of extremes are rather sensitive to changes of the underlying thresholds. It thus …
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An analysis of anomalously wet summers in the South Western Cape of South Africa
… the southwestern Cape (SWC) experiences most its rainfall in the austral winter (May-September). Due to interannual, intraseasonal and interdecadal variability, drought is a familiar occurrence. The SWC recently suffered from an extended dry period, known as the ‘Day Zero Drought' during …
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Release and Transport of Bacteria and Nutrients from Livestock Manure Applied to Pastureland
… Research Farm) were studied. During a short but intense rainfall event, the highest bacterial release was measured under the cowpie treatment (E. coli concentrations ranging from 37,000 to >300,000 and FC concentrations ranging from 65,000 to >300,000). Pasturelands with a history of previous …
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Design and optimization of a waste rock cover system for arid environments
… approximately 712 mm with more than 80 % of the rainfall occurring between November and April. Total annual potential evaporation was estimated to be about 2300 mm. Historically acid mine drainage was collected in evaporation ponds. The first phase of the research involved characterizing the …
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